diff --git a/PlaytimeStats/scripting/PlaytimeStats.sp b/PlaytimeStats/scripting/PlaytimeStats.sp
index f27057a6..cbc70147 100644
--- a/PlaytimeStats/scripting/PlaytimeStats.sp
+++ b/PlaytimeStats/scripting/PlaytimeStats.sp
@@ -59,6 +59,9 @@ public void OnClientDisconnect(int client)
 
 	int iAuthID = GetSteamAccountID(client);
 	
+	if(iAuthID == 0)
+		return;
+	
 	char sName[MAX_NAME_LENGTH];
 	GetClientName(client, sName, sizeof(sName));
 	char sSafeName[(2*MAX_NAME_LENGTH)+1];